Panel 1: Anthony finally asks if he and Liz should discuss marriage to which Liz responds it would be good idea. He responds to her echo by pointing out they've been friends for so long, they'd be good partners, a proposition to which Liz agrees. Punchline: The fact that they're practically already married has nothing to do with anything to them because they haven't said it out loud.
Panel 2: Anthony actually fucking proposes and the Breath accepts.
Panel 3: Ever a master of the blindlingly obvious, he realizes that they're engaged. Liz echoes her agreement.
Panel 4: They have a moment of silence to let things sink in.
Panel 5: RED ALERT! THIS IS NOT A DRILL! CONDITION [BOXCAR]!! I REPEAT! CONDITION: [BOXCAR]!!! THE SETTLEPOCALYPSE HAS BEEN UNLEASHED!!!
Tune in tomorrow as they break the news. You thought John and Elly were happy when they only thought that relationships they felt threatened by might be destroyed. Let's see their hateful glee when they realize their enemies have been damned to eternal frustration.